American College of Trust and Estate Counsel  
An international association of lawyers skilled and experienced in the  preparation of wills and trusts; estate planning; probate procedure and  administration of trusts and estates of decedents, minors and incompetents.  

National Association of Charitable Gift Planners (formerly Partnership for Philanthropic Planning)  
CGP is a professional association for people whose work includes developing, marketing, and administering charitable planned gifts.

American Council on Gift Annuities  
ACGA is a qualified nonprofit organization formed in 1927 as the Committee on Gift Annuities for the purpose of providing educational and  other services to American charities regarding gift annuities and other forms of planned gifts.